<template>
  <el-menu default-active="1" class="el-menu-vertical-demo">
    <el-menu-item index="1">选项1</el-menu-item>
    <el-menu-item index="2">选项2</el-menu-item>
    <el-menu-item index="3">选项3</el-menu-item>
  </el-menu>
</template>

<script>
export default {
  name: 'NavigationComponent',
};
</script>

<style scoped>
.el-menu-vertical-demo {
  height: 100%;
}
</style>